气候变化领域集成服务门户(CCPortal): Mineral-catalysed formation of marine NO and N2O on the anoxic early Earth

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DOI	10.1038/s41561-022-01089-9
	Mineral-catalysed formation of marine NO and N2O on the anoxic early Earth
	Buessecker, Steffen; Imanaka, Hiroshi; Ely, Tucker; Hu, Renyu; Romaniello, Stephen J.; Cadillo-Quiroz, Hinsby
发表日期	2022
ISSN	1752-0894
EISSN	1752-0908
起始页码	1056
结束页码	+
卷号	15 期号:12 页码:11
英文摘要	Microbial denitrification converts fixed nitrogen species into gases in extant oceans. However, it is unclear how such transformations occurred within the early nitrogen cycle of the Archaean. Here we demonstrate under simulated Archaean conditions mineral-catalysed reduction of nitrite via green rust and magnetite to reach enzymatic conversion rates. We find that in an Fe2+-rich marine environment, Fe minerals could have mediated the formation of nitric oxide (NO) and nitrous oxide (N2O). Nitrate did not exhibit reactivity in the presence of either mineral or aqueous Fe2+; however, both minerals induced rapid nitrite reduction to NO and N2O. While N2O escaped into the gas phase (63% of nitrite nitrogen, with green rust as the catalyst), NO remained associated with precipitates (7%), serving as a potential shuttle to the benthic ocean. Diffusion and photochemical modelling suggest that marine N2O emissions would have sustained 0.86.0 parts per billion of atmospheric N2O without a protective ozone layer. Our findings imply a globally distributed abiotic denitrification process that feasibly aided early microbial life to accrue new capabilities, such as respiratory metabolisms.
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000928399600009
来源期刊	NATURE GEOSCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272548
作者单位	Arizona State University; Arizona State University-Tempe; National Aeronautics & Space Administration (NASA); NASA Ames Research Center; Arizona State University; Arizona State University-Tempe; California Institute of Technology; National Aeronautics & Space Administration (NASA); NASA Jet Propulsion Laboratory (JPL); California Institute of Technology; University of Tennessee System; University of Tennessee Knoxville; Arizona State University; Arizona State University-Tempe; Stanford University
推荐引用方式 GB/T 7714	Buessecker, Steffen,Imanaka, Hiroshi,Ely, Tucker,et al. Mineral-catalysed formation of marine NO and N2O on the anoxic early Earth[J],2022,15(12):11.
APA	Buessecker, Steffen,Imanaka, Hiroshi,Ely, Tucker,Hu, Renyu,Romaniello, Stephen J.,&Cadillo-Quiroz, Hinsby.(2022).Mineral-catalysed formation of marine NO and N2O on the anoxic early Earth.NATURE GEOSCIENCE,15(12),11.
MLA	Buessecker, Steffen,et al."Mineral-catalysed formation of marine NO and N2O on the anoxic early Earth".NATURE GEOSCIENCE 15.12(2022):11.